__________ pumps are axial flow pumps.
(A) Turbine
(B) Propeller
(C) Diffuser
(D) None of these

1 Answer

Answer :

(B) Propeller

Related questions

Description : __________ is an example of axial flow impeller. (A) Paddle (B) Turbine (C) Propeller (D) All (A), (B) and (C)

Last Answer : (C) Propeller

Description : A propeller agitator (A) Produces mainly axial flow (B) Is used for mixing high viscosity pastes (C) Runs at very slow speed (2 rpm) (D) All (A), (B) and (C)

Last Answer : (A) Produces mainly axial flow

Description : A mixed flow centrifugal pump (A) Employs such an impeller, through which the flow is a combination of radial & axial flow (B) Mixes the two fluids before pumping them (C) Pumps the two fluids separately and then mixes them (D) Employs impellers in both the radial & axial directions

Last Answer : (A) Employs such an impeller, through which the flow is a combination of radial & axial flow

Description : The propeller shaft speed in a turbo-electric, synchronous, propulsion drive motor is changed by varying the __________. A. turbine speed B. number of motor poles C. field strength of the generator D. field strength of the motor

Last Answer : Answer: A

Description : Propeller type centrifugal pumps are most suitable for (A) High capacity at high heads (B) High capacity at low heads (C) Low capacity at high heads (D) Low capacity at low heads

Last Answer : (B) High capacity at low heads

Description : Most commonly used pump for lifting water in water supply mains, is  (A) Axial flow pump  (B) Reciprocating pump  (C) Rotary type pump  (D) Centrifugal pumps 

Last Answer : (A) Axial flow pump 

Description : Pick out the wrong statement pertaining to the turbine agitator. (A) Recommended peripheral speed for the turbine agitator is 200-250 metres/minute (B) Pitched blade turbine agitator gives only radial flow with ... l/4th of agitator diameter (with central disc, it is l/8th of the agitator diameter)

Last Answer : (B) Pitched blade turbine agitator gives only radial flow with complete absence of the axial flow

Description : Most of the centrifugal pumps used in chemical plants are usually __________ driven. (A) Steam (B) Diesel engine (C) Electric motor (D) Gas turbine

Last Answer : (C) Electric motor

Description : Pick up the correct statement from the following regarding radial flow centrifugal pumps:  (A) These are provided with volute type or turbine type casings  (B) In involute type of radial flow ... centrifugal pump, is always higher than that of  volute type  (D) All the above 

Last Answer : (D) All the above 

Description : Which of the following is the most suitable for handling fibrous and dense slurries? (A) Propeller agitator (B) Cone type agitator (C) Turbine agitator

Last Answer : (B) Cone type agitator

Description : Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids (> 50000 centipoise)? (A) Propeller (B) Helical screw (C) Flat blade turbine (D) Curved blade turbine

Last Answer : (B) Helical screw

Description : Draining of shallow pits or sump is done by a sump pump, which is a __________ pump. (A) Single stage vertical (B) Centrifugal (C) Plunger (D) Diffuser

Last Answer : (A) Single stage vertical

Description : . A special type of liquid transporting device is the diffuser pump, in which __________ are minimised. (A) Bearing losses (B) Disk friction (C) Shock losses (D) Cavitation

Last Answer : (C) Shock losses

Description : A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the direction of the blade motion. (A) 60° (B) 90° (C) 180° (D) 270°

Last Answer : (B) 90°

Description : High specific speed of a pump implies that, it is a/an __________ pump. (A) Centrifugal (B) Mixed flow (C) Axial flow (D) None of these

Last Answer : (C) Axial flow

Description : Higher specific speed (200-500) of a centrifugal pump indicates that the pump is of __________ flow type. (A) Axial (B) Radial (C) Mixed (D) None of these

Last Answer : (A) Axial

Description : Low specific speed of a pump implies that, it is a/an __________ pump. (A) Axial flow (B) Centrifugal (C) Mixed flow (D) None of these

Last Answer : (B) Centrifugal

Description : Working of a __________ pump characterises mixed flow. (A) Turbine (B) Piston (C) Diaphragm (D) None of these

Last Answer : (A) Turbine

Description : In case of a __________ the energy of flow is considerably decreased downstream of the machine. (A) Blower (B) Turbine (C) Centrifugal pump (D) Centrifugal fan

Last Answer : (B) Turbine

Description : Is it safe to use spit balls (jelly balls) in my water pipe as a diffuser?

Last Answer : It sounds like sodium polyacrylate from the description. Put that name into YouTube and you'll find lots of entertaining videos showing its uses. It's also the stuff inside those packets that say NOT ... to put in your bong, but since it's used around foodstuffs, it's probably reasonably stable.

Description : Is there a homemade recipe for the stuff that you put in a reed diffuser?

Last Answer : I’d love some recipies too… I have tried using aromotherapy oils mixed with a bit of water, this worked well, but didn’t last too long

Description : Help with finding an oil diffuser?

Last Answer : Do you want the kind that uses a candle?

Description : What can I use in place of a hair diffuser?

Last Answer : Using certain styling products can help give you “better” curls (more definition and hold).

Description : Is a diffuser included with the Vidal Sassoon VS783N3 Hair Dryer?

Last Answer : The Vidal Sassoon hair dryer doesn't come with a diffuser, but it can be bought seperately.

Description : What is the purpose of the diffuser attachment that came with my hair dryer?

Last Answer : A diffuser on the hair dryer is used typically for curly hair, allowing it to dry and not frizz or pull out the curls. It can also be used to add volume and body.

Description : In centrifugal compressor terminology, vaneless space refers to the space between A. The inlet and blade inlet edge B. Blades in the impeller C. Diffuser exit and volute casing D. Impeller tip and diffuser inlet edge

Last Answer : ANSWER : D

Description : Which one of the following statements is correct? A. Reciprocating compressors are used to supply large quantities of air at a lower pressure ratio B. Centrifugal compressors are used to supply ... . Centrifugal compressors cannot be run at high speed because of impeller, diffuser and casing.

Last Answer : ANSWER : B

Description : A waste heat recovery unit (WHRU) is an_________ that transfers heat from process outputs at high temperature to another part of the process for some purpose, usually increased efficiency. a) Energy recovery heat exchanger b) Energy recovery heat diffuser c) Both ‘a’ and ‘b’ d) None of the above

Last Answer : Energy recovery heat exchanger

Description : Paddle agitator (A) Is suitable for mixing low viscosity liquids (B) Produces axial flow (C) Moves at very high speed (D) None of these

Last Answer : (A) Is suitable for mixing low viscosity liquids

Description : The Stoke's stream function applies to the (A) Irrotational flow only (B) Ideal/non i viscous fluids only (C) Cases of axial symmetry (D) None of these

Last Answer : (C) Cases of axial symmetry

Description : While starting an axial flow pump, its delivery valve should be kept (A) Open (B) Closed (C) Either open or closed (D) None of these

Last Answer : (A) Open

Description : Propellers are (A) Axial flow mixers (B) Low speed impeller (C) Used for mixing liquids of high viscosity (D) Radial flow mixers

Last Answer : (A) Axial flow mixers

Description : Which of the following is most prone to pulsating discharge flow? (A) Centrifugal pump (B) Reciprocating pump (C) Gear pump (D) Axial flow pump

Last Answer : (C) Gear pump

Description : Which of the following can be used to create a flow of gas, where no significant compression is required? (A) Reciprocating compressor (B) Blower (C) Axial flow compressor (D) Centrifugal compressor

Last Answer : (B) Blower

Description : A backmix reactor (A) Is same as plug-flow reactor (B) Is same as ideal stirred tank reactor (C) Employs mixing in axial direction only (D) Is most suitable for gas phase reaction

Last Answer : (B) Is same as ideal stirred tank reactor

Description : In a semi-batch reactor, (A) Mixing takes place in axial direction only (B) Velocity of reaction can be controlled (C) Condition similar to plug flow reactor exists (D) Residence time is constant

Last Answer : (B) Velocity of reaction can be controlled

Description : A plug-flow reactor is characterised by (A) High capacity (B) Presence of axial mixing (C) Presence of lateral mixing (D) Constant composition and temperature of reaction mixture

Last Answer : (C) Presence of lateral mixing

Description : Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg. (A) 1 (B) 0.1 (C) 0.01 (D) 0.001

Last Answer : (C) 0.01

Description : Foot valves provided in pumps are __________ valves. (A) Relief (B) Three/four way (C) Pressure reducing (D) Directional contro

Last Answer : (D) Directional control

Description : __________ pumps are a group of vacuum pumps. (A) Hyster (B) Sump (C) Mono (D) Submerged

Last Answer : (A) Hyster

Description : Reciprocating pumps  (A) Are not suitable for variable heads  (B) Are four times costlier than centrifugal pumps  (C) Are not suitable for pumping water containing sediments  (D) Single stroke produce pulsating flow 

Last Answer : (A) Are not suitable for variable heads 

Description : Conversion of dynamic velocity head into static pressure head in a centrifugal pump is the result of : (a) Increasing area of flow between adjacent vanes from inlet to outlet (b) Difference in pressure between suction and delivery ends (c) Radial thrust in pumps (d) Stuffing Box

Last Answer : (b) Difference in pressure between suction and delivery ends

Description : The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a (A) Boundary mixer (B) Propeller agitator (C) Sharpies centrifuge

Last Answer : (A) Boundary mixer

Description : Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation ... (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Last Answer : (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Description : In a mixer, the quantity, (v. L/D) is termed as __________ number (where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing). (A) Weber (B) Peclet (C) Brinkman (D) Schmidt

Last Answer : (B) Peclet

Description : For very low pressure and high discharge rate, the compressor used is a/an __________ compressor. (A) Axial (B) Reciprocating (C) Rotary (D) None of these

Last Answer : (C) Rotary

Description : Which one of the following types of compressor is mostly used for supercharging of IC engines? (a) Radial flow compressor (b) Axial flow compressor (c) Root blower (d) Reciprocating compressor

Last Answer : Ans : c

Description : Compressor mostly used for supercharging of IC engine is A. Radial flow compressor B. Axial flow compressor C. Root blower compressor D. Reciprocating compressor

Last Answer : ANSWER : A

Description : Which one of the following type of compressor is mostly used for supercharging of I.C engine A. Radial flow compressor B. Axial flow compressor C. Root blower D. Reciprocating compressor.

Last Answer : ANSWER : C

Description : Why axial flow compressor is preferred for gas turbines for aeroplanes ?

Last Answer : Because it has low frontal area.